Service difficulty report · Pump · Boeing 777222

Difficulty date
May 4, 2010
Submitted
May 5, 2010
Operation
Air carrier
Aircraft
N799UA
Make and model
Boeing 777222
Aircraft serial
26926
Aircraft time
53,010 hours, 7,778 cycles
Engine
Pwa PW4090
Part
Pump
Part number
S271W1114
Part serial
125
Condition
Leaking
Location
Hyd System
Stage of operation
NR
How discovered
9
Nature of condition
K
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

C1 HYD ADP INTERNAL LEAKAGE. RUNNING LEAKAGE BY PUMP'S DRAIN LINE. REPLACED C1 ADP, FINAL CHECK IS GOOD.